סי' ו קרא את יהושע

The matter of Rosh HaShanah, Yom Kippur, Sukkos, etc., is explained well through this discourse in Likutay Halachos: Laws of Shabbos, Law 7, and in Laws of Rosh HaShanah, Law 7 — see there. Rabbi Nachman of Tchehrin defers here entirely to Rabbi Nosson of Breslov's Likutay Halachos, in keeping with his stated principle of not elaborating where the holy Anshay Shlom of Breslov have already done so. The reader is encouraged to study those sections.